CN214944787U

CN214944787U - Plunger pump

Info

Publication number: CN214944787U
Application number: CN202023302615.XU
Authority: CN
Inventors: 胡传术
Original assignee: R & D Center Of Dalian Chuanshu Energy Saving Pump Co ltd
Current assignee: R & D Center Of Dalian Chuanshu Energy Saving Pump Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-30
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a plunger pump, the lower extreme is the crankcase and installs the bent axle in the crankcase, be equipped with the crank throw in the crankcase, the crank throw is connected with the guide piston rod, the crankcase is by upper and lower two parts lock, the reciprocating motion of vertical direction is made at the piston box to connecting rod plunger subassembly, connecting rod plunger subassembly is including the guide piston rod who up is connected from bottom to top, the water injection plunger, the direction is pressed the cover, and the periodic case that receives the piston rod top to push away, a spring, the drainage subassembly is located the pump cover casing outside and pump cover casing fixed connection, and be connected with drainage controlling means on the drainage subassembly, the water sucking mouth of room that absorbs water is connected with water absorption controlling means, water injection plunger surface sets up waterproof sealing washer one and waterproof sealing washer two, direction piston rod surface sets up waterproof seal seat and grease proofing seal receptacle. This plunger pump dispersion type advances, the design of drain pipe makes the resistance of intaking reduce when improving the flow, and the drainage speed accelerates, has improved drainage efficiency. The running cost of the plunger pump is saved.

Description

Plunger pump

Technical Field

The utility model relates to a hydraulic means specifically is a plunger pump.

Background

At present, plunger pumps are widely applied in the market by the characteristics of compact structure, high working pressure and the like, in order to provide plunger pumps with larger flow, CN100467863C discloses a plunger pump, which comprises two mutually communicated piston box bodies, wherein the axes of the two piston box bodies form a certain included angle, namely, a V shape, although the number of plungers can be symmetrically increased by the V-shaped plunger pump so as to increase the flow and design lift, the two sub box bodies still form a certain included angle with the vertical direction, taking the included angle of 60 degrees as an example, the plungers, the guide rods, the valve cores and the valve seats in the plunger pump can bear 30% of abnormal abrasion in reciprocating motion, the abrasion of one side can greatly aggravate the abrasion rate of reciprocating parts, the service life of the reciprocating parts is reduced, frequent shutdown maintenance is caused to users, and additional expenses are generated. In addition, the material of the reciprocating member of plunger pump in the past generally is alloy steel, quenching and tempering, nitrogenize, use after the polishing, the plunger reaches into water, the purpose of drainage under reciprocating action, to the muddy water that contains solid particle, under long-time effect, solid particle causes scratch, collision very easily to the surface of direction piston rod, case, disk seat, make their surface unevenness, these surfaces will greatly reduced to the sealed effect of O type circle so, because plunger pump water inlet process is a vacuum water absorption process, sealing performance is very important, long-term wearing and tearing can cause the plunger pump ventilative, permeate water, advance, the drainage process just can't normally go on.

CN202811241 discloses a plunger pump, which cannot be applied to a mine or a well with a small space, and the water outlet assembly is located in the pump cover housing, the water outlet efficiency of the pump body depends on the movement efficiency of the guide piston rod, the improvement of the water discharge efficiency can only be completed by accelerating the movement of the guide piston rod, the guide piston rod needs more electric energy when the movement is accelerated, and the guide piston rod can affect the service life of the guide piston rod when the guide piston rod moves too fast.

The existing V-shaped arrangement structure increases the volume of the pump, the occupied space and the manufacturing cost. The pump placing position under the middle and small mines is generally narrow, so that the existing V-shaped plunger pump cannot be installed and used in many occasions.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plunger pump to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a plunger pump, the lower extreme is the bent axle box and installs the bent axle in the bent axle box, be equipped with the crank throw in the bent axle box, the crank throw is connected with the guide piston rod through the connecting rod, the bent axle box is by upper and lower two parts lock, the reciprocating motion of vertical direction is made to connecting rod plunger subassembly in the piston box, connecting rod plunger subassembly is including the guide piston rod that is connected from bottom to top, the water injection plunger, the direction is pressed the cover, and the periodic case that is pushed away by the piston rod, a spring, the drainage subassembly is located the pump cover casing outside and pump cover casing fixed connection, water injection plunger surface sets up waterproof seal one and waterproof seal two, guide piston rod surface sets up waterproof seal seat and grease proofing seal receptacle.

Further optimized, the water outlet of the water discharging component is at least connected with 1-2 water discharging pipes, and the water inlet of the water absorbing chamber is at least connected with 1-2 water inlet pipes.

Further optimizing, the sliding matching surface of the connecting rod plunger assembly and the piston box body is made of alumina ceramics, and the surface hardness is higher than HRC 70.

Further optimized, vacuum hydrolysis-resistant lubricating grease is added between the first waterproof sealing seat, the first oil-proof sealing seat, the second waterproof sealing seat and the second oil-proof sealing seat.

Further optimizing, the drainage assembly is connected with the pump cover shell through a flange.

Compared with the prior art, the beneficial effects of the utility model are that: the design of the dispersive water inlet and outlet pipes reduces the water inlet resistance while improving the flow, accelerates the water outlet speed and improves the water outlet efficiency. The running cost of the plunger pump is saved. The plunger and the crankshaft form 90-degree vertical motion, offset resistance of the plunger is eliminated, abnormal abrasion of a reciprocating piece of the plunger pump is reduced, the service life is prolonged, and the floor area of the plunger pump is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the plunger pump of the present invention.

Fig. 2 is a front view of the plunger pump of the present invention.

Fig. 3 is a top view of the plunger pump of the present invention.

Wherein: 1-crankshaft, 2-crankcase, 3-guide piston rod, 4-water injection plunger, 5-drainage component, 6-pump cover shell, 7-water outlet and 8-water inlet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The utility model provides a technical scheme: the utility model provides a plunger pump, the central line of piston box is vertical direction, the reciprocating motion of vertical direction is made to connecting rod plunger subassembly in the piston box, connecting rod plunger subassembly includes the guide piston rod 3 that is connected from bottom to top, water injection plunger 4, the direction is pressed the cover, and the periodic case that receives the piston rod top to push away, a spring, piston box below is equipped with bent axle box 2, be equipped with the crank throw in the bent axle box 2, the crank throw is connected with guide piston rod 3 through the connecting rod, drainage subassembly 5 sets up and passes through flange fixed connection in the 6 outsides of pump cover casing and pump cover casing 6, water injection plunger 4 surface sets up waterproof seal circle one and waterproof seal circle two, guide piston rod surface sets up waterproof seal seat and grease proofing seal seat, the leakproofness of the pump body has been improved greatly. The water outlet 7 of the drainage component 5 is connected with 1-2 drainage pipes, and the water inlet 8 of the water suction chamber is connected with at least 1-2 water inlet pipes, so that the water inlet resistance is reduced while the drainage flow is improved, the drainage speed is accelerated, the drainage efficiency of the pump is improved, and the electricity expense is saved for users. The sliding matching surface of the connecting rod plunger assembly and the piston box body is made of alumina ceramics. Vacuum hydrolysis-resistant lubricating grease is added to the bottoms of the waterproof sealing ring I, the waterproof sealing ring II, the waterproof sealing seat and the oil-proof sealing seat, the sealing performance of the pump is improved, and the service life of the pump is prolonged.

The piston box body of the utility model refers to a shell with an inner cavity which is in sliding fit with the reciprocating piece in the plunger pump in the up-and-down motion, and comprises a piston cavity of a crankcase body, wherein a sliding sleeve is guided; the inner cavity of the shell of the water suction chamber; and the valve seat in the pump cover shell, the central line of the parts, namely the direction of the axis is the vertical direction, the direction of the axis of the crankshaft 1 is the horizontal direction, then the motion of the guide piston rod, the water injection plunger, the valve core and the valve seat reciprocating part is completely vertical to the horizontal direction, the parts are not stressed in the radial direction, the radial offset friction is zero, and the service life of the parts cannot be too short due to the serious local abrasion.

Meanwhile, in order to reduce the abrasion of reciprocating parts to the maximum extent, the material of the sliding matching surface of the connecting rod plunger assembly and the piston box body is alumina ceramic, the surface hardness is higher than HRC70, when liquid contains solid particles, the destructiveness of the particles aligned with the surface is very small due to the high surface hardness, and the good surface can ensure that the plunger pump keeps good sealing performance for a long time, so that the plunger pump can deal with muddy water containing the particles which can not be solved by other pumps.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plunger pump, characterized by: the lower extreme is the bent axle box and installs the bent axle in the bent axle box, be equipped with the crank throw in the bent axle box, the crank throw is connected with the direction piston rod through the connecting rod, the bent axle box is by upper and lower two parts lock, the reciprocating motion of vertical direction is made in the piston box to the connecting rod plunger subassembly, the connecting rod plunger subassembly includes the direction piston rod that is connected from bottom to top, the water injection plunger, the direction is pressed the cover, and the periodic case that receives the piston rod top to push away, a spring, the drainage component is located the pump cover casing outside and pump cover casing fixed connection, water injection plunger surface sets up waterproof sealing washer one and grease proofing sealing washer two, direction piston rod surface sets up waterproof seal seat and grease proofing seal receptacle.

2. A plunger pump according to claim 1, characterized in that: the water outlet of the water discharging component is at least connected with 1-2 water discharging pipes, and the water inlet of the water absorbing chamber is at least connected with 1-2 water inlet pipes.

3. A plunger pump according to claim 1, characterized in that: the sliding matching surface of the connecting rod plunger assembly and the piston box body is made of alumina ceramics, and the surface hardness is higher than HRC 70.

4. A plunger pump according to claim 1, characterized in that: vacuum hydrolysis-resistant lubricating grease is added between the first waterproof sealing seat, the first oil-proof sealing seat, the second waterproof sealing seat and the second oil-proof sealing seat.

5. A plunger pump according to claim 1, characterized in that: the drainage assembly is fixed with the pump cover shell through a flange.